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(No Model.)

.G. G. SPENGLER.

MECHANISM FOR DRIVING SEWING MAGHINES. No. 330,522. Patented Nov. 17, 1885. Q

n. PETERS, mmumo m wnmngm ac.

UNITED STATES PATENT Critics.

CHRISTIAN G. SPENGLER, OF HOBOKEN, NEW JERSEY, ASSIGNOR, BY MESNE ASSIGNMENTS, TO CHRISTIANA R. SPENGLER, OF SAME PLACE, AND

OSCAR E. A. WEISSNER, OF NEW YORK, N. Y.

MECHANISM FOR DRIVING SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 330,522, dated November 17,1885.

Application filed May 8, 1885. Serial No. 164,764. (No model.)

To all whom it may concern:

Be it known that I, CHRISTIAN G. SPENG- LER, of Hoboken, in the county of Hudson and State of New Jersey, have invented a certain new and useful Improvement in Mechanism for Driving Sewing-Machines, of which the following is a specification.

I will describe a mechanism embodying my improvement, and then point out the features 19 of the improvement in a claim.

In the accompanying drawings, Figure l is a front view of a sewing-machine, a stand on which it is mounted, and mechanism for driving it. Fig. 2 is an end view of the same.

Fig. 3 is a transverse section of a clutch which forms part of the driving mechanism. Fig. 4 is a section of the clutch, taken in a plane at right angles to Fig. 3.

Similar letters of reference designate corresponding parts in all the figures.

' A designates a sewing-machine of the general type known as the WillcoX & Gibbs machine. My improvement is not, however, confined in its application to any particular machine. The machine shown has a continuously-rotating driving-shaft, a. An eccentric or crank, with which the shaft is provided, imparts motion to a pitman-rod, 1), whereby the needle-driving arm 0 is oscillated.

The sewing-machine is mounted on a table or plat-form, B, erected on standard C. A

pulley, d, affixed to the shaft to, receives a belt, D, from a belt-pulley, E, whose shaft E is journaled in hangers F, depending from the table or platform B. On the shaft E is arranged a clutch consisting of a ratchet-wheel,

G, which is affixed to the shaft, and a pulley,

G, mounted loosely on said shaft, and provided with a pawl or pawls, G", adapted to engage with the teeth of the ratchet-wheel when the pulley G is rotated in one direction, so as to transmit motion to the ratchet-wheel and its shaft E, and adapted to play freely over the teeth of the ratchet-wheel when the 5 pulley G is rotated in the other direction.

H designates a lever consisting, essentially,

of a rock-shaft, h, journaled in the standards C, an arm, h, extending downwardly from the rock-shaft between the standards C and a bio furcate arm, h, extending upwardly from the rock-shaft outside one of the standards C. The arm h of the lever H has at the lower end a foot-piece, h', which is connected to itin such manner as to be free to rock. The lever is to be swung or oscillated by the foot of the 0perator applied to the foot-piece. The foot- I piece is rendered free to rock, in order that it may accommodate itself to the movements which the foot of the operator will naturally have in swinging the lever H. I may make 6 the rock-shafth and arm h of the lever of iron.

I preferably make the arm h of cast-steel, in order that the bifurcate portions thereof may be resilient. The bifurcate portions may be formed integral with a collar, which is fitted 5 and secured to the end of the rock-shaft h. Astrap, cord, or like device, I, made of leather or analogous material, is wrapped or wound around the pulley (3, and fastened at the ends to the bifurcate portions of the arm h of the lever H. When the lever H is swung in such direction as to cause its arm h to move rearward, the pulley G will be rotated by the strap I in the proper direction to effect the rotation of the shaft E. The sewing-machine 7 5 will then be driven. When thelever H swings in the reverse direction, the strap I will rotate the pulley G in such direction that it will run free of the ratchet-wheel G, so as to return to the starting position. Of course the ratchet- 8 wheel G and the shaft E may rotate free of the pulley G whenever they acquire a greater speed than the pulley G, even though thelatter is rotating in the same direction.

By my improvement I provide for driving 8 a sewing-machine with an easy motion and very rapidly.

What Iclaim as my invention, and desire to secure by Letters Patent, is-

The combination, with a rotary shaft, of a lever having an arm adapted to receive motion from the foot, and an arm connected toastrap, cord, or like device, a pulley arranged loosely on the said rotary shaft and receiving the strap, cord, or, like device around it, and a wheel affixed to the said rotary shaft and deriving motion from the said pulley when the pulley runs in one direction, and running free of the pulley when the pulley runs in the reverse direction.

CHRISTIAN G. SPENGLER.

Witnesses:

WM. G. LIPSEY, EDWARD '1. Rooms. 

